Introduction to ABS plastic injection molding
1. ABS plastic particles must be fully dried before injection molding. They are required to be dried in hot air at 80-90 ℃ for 4 hours, and the storage barrel is at least 50 kg, and the large plastic parts are more than 100 kg.
2. The temperature of conical injection tube is between 200-275 ℃.
3. The mold used for injection molding should be kept clean to avoid polluting the injection molding products. The mold temperature should be reduced by cooling water.
4. The injection pressure is 700-1200kg / C ㎡, and 1400KG / C ㎡ is recommended.
5. It is better not to use release agent, and use water-based release agent when necessary.
6. If the new material is mixed with the recycled material, the recycled material shall not exceed 30%. It is necessary to lengthen the drying time and ensure that the recycled material is not polluted. When injecting bright and flat plastic parts, it is best not to use recycled materials.
7. Plastic parts after injection molding should be taken out with white gloves and immediately packed with adhesive tape to prevent bumping on the smooth surface.
8. Plastic parts shall be stored in plastic baskets to avoid extrusion and deformation, away from high-temperature workshops. Each layer of plastic parts shall be separated by cardboard, with a maximum of three layers.
9. The injection molding workshop requires to reduce the dust to a minimum to avoid dust adhering to the mold surface.
10. The shooting speed should be slow, the shooting time should be long, and the tightness should be good.
11. The pressure holding time should be 2-5 seconds. The pressure holding time is too short, and ABS countercurrent often leads to deformation of formed products at the entrance.
